Answer:
Aristotle
Step-by-step explanation:
Aristotle was ta first philosopher who used principle of non contradictions. This is the first philosophy that deals with ontology and non contradiction principle. He said that principle of non contradiction is very important because without this principle we could not know anything that we know today with the help of this principle. Without non-contradiction we could not know what is the difference rabbit and cat and what is similarities. It is impossible to make the rationale between the principle essence and accident , to draw the inferences, we are not able to distinguishes between them without non-contradiction principle. Aristotle main discussion on this principle were occur in metaphysics. This principle also raises the issues in different area such as modern philosophy.